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AZ-305 · Network design

Practice question 326 of 400 · hard

An ExpressRoute design must tolerate a provider-path or peering-location outage. Which two areas should be included in its resilience review? Select 2 answers.

Select all that apply. Every correct option and no extras are required for credit in the app.

  1. A.Ignore return routes because BGP encrypts the application
  2. B.Gateway design, route coverage, and tested surviving connection capacity
  3. C.Assume one circuit's redundant connections eliminate every customer and provider failure
  4. D.Count a public web health check as a complete private hybrid failover test
  5. E.Customer devices, provider paths, and diverse circuits or peering locations where required
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✓ Correct answers

  • Gateway design, route coverage, and tested surviving connection capacity
  • Customer devices, provider paths, and diverse circuits or peering locations where required

Resilience spans the full physical and logical path, including devices, circuits, locations, gateways, routes, and surviving capacity. Circuit redundancy alone does not remove correlated upstream failures, one public check does not validate hybrid paths, and BGP does not eliminate routing or provide encryption. Source guide: PDF page(s) 56-57.

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